Steam-heatim appaeatus



@uitrit tatr atrnt @fitte JAMES CHAMBERS, OF BOSTON, MASSACHUSETTS.

Letters Patent No. 74,045, elated February 4, 1868; antedated January31, 1868.

STEAM-HEATING APPARATUS.

TO ALL PERSONS TO WHOM THESE PRESENTS SHALL COME: i

Be it known that I, JAMES CHAMBERS, of Boston, in the county of Suffolk,and State of Massachusetts, have invented a new and useful Apparatus forHeating, eitherby gas or gas and air, or the equivalent thereof, waterunder pressure; and I do hereby declare the sanie to be fully describedin the following specification, and represented in the accompanyingdrawings, of which- Figure I is a top view,

Figure 2 a side elevation, and

Figures 3 and 4 are vertical sections of it.

Generaliy speaking, the apparatus, when set up for use, is to bearranged in a closet, underneath a washhasin, and is to be employed forheating water therefor; It, however, may be otherwise disposed, andemployed for heating water for other purposes than washing.

It consists, first, of a cylindrical or other propersshaped vessel orboiler, A, provided with a peculiar safetyvalve, B, such valve beingapplied at the top of the boiler, and having a lever, a, connected withits stem, or projecting therefrom, in manner as represented. Aninduetion-ppe, b, leads into the lower part of such boiler, and there isalso an eduction-pipe, e, extending from the upper part ofthe boiler.The pipe b is to lead water, under pressure, into the boiler, and thepipe c is to discharge it.tl1ercfrom, as occasion may require, thelatter y pipe being extended over a basin, and there provided with afaucet or stop-cock. Within the boiler is a serpentine coil r pipe, C,whose low'er end opens through the bottom of the boiler, and directlyover a gas-burner, D. The upper part ofthe coil or pipe C extends out ofandabove the boiler, and has a damper or throttlevalve, d, arrangedwithin it, the rod or stem e of the said damper being bent at or aboutat a right angle, as represented in ig. 1. The outer end of the rod isconnected with the safety-valve lever by a chain. The gasburner Dreceives its gas from a conduit, f, provided with a stop-cock,g, fromthe key of which a Weighted arm, 7L, projects, such arm being connectedwith the lever of the safety-valve by means of a chain, z'. The'saidsafety-valve is composed of a piston, le, and a cylinder, Z, the latterextending up from the boiler and opening out of it. Through the side ofthe cylinder Zis a hole, m, which, when the safety-valve or piston israised above it in the cylinder, serves to discharge steam from theboiler. The gas-conduit,f, extends beyond the boiler, as shown at q, andhas a cap or thimbl, m,'serewed upon it at its extremity. When thisthimble is off the extension g, air may be forced or caused to pass intothe gals-conduit,- through its open end, so as to mingle with the gaspassing through the burner, and be burned therewith.l In order .toconcentrate the heat of the gas-burner upon the bottom of the boiler,and cause it to pass from thence up into and through the coil C, thegas-burner is surrounded by a easing, E, whose sides are perforated withholes `11. n, for the passage of air into such casing. Then water iswithin the boiler, and the gas in the burner is indanned, such waterwill be heated. As steam may form in the boiler, it, by acting againstthe safety-valve, will raise it.- The elevation of the safety-valve willcause the gas-cool: and the damper, by means of the lever and chains, tobe revolved, so as to nearly cut oil' the owage of gas to the burner,and bring the damper into a vertical or inclined posi-A tion, inorder'to allow the heat to ow out of the coil. In this way the boilerwill be prevented from bursting, andthe flow-'age of gas to the burner,for heating the water, will be regulated, as occasion may-require; forwhenever any water may be drawn from the boilcr,'and colder water mayrush therein to supply the place of the water extracted, thesafety-valve will fall, and the weight of the arm of the gas-cock Willturn the key of such cock, so as to let on more gas to the burner, andthereby increase'the iiow thereof.

The damper and its operative-apparatus, that is, its bent stem andchain, I consider an auxiliary to my main invention.

What I claim as of my invention, in the above-described apparatus, is asfollows:

I claimthe combination of the boiler A, the gas-burner D, its conduitf,and cock g, the safety-valve B, the lever a thereof, the chain z', andthe arm L, and its weight o, or their equivalents.

And I also claim the combination of the same and the coil C, and thedamper d, and its bent arm e, and the chain p, connecting lsuch arm withthe safety-valve lever.

I also claim the combination of' the circulation or induction andeduction-pipes c, with the boiler, the gasl conduit and burner, thesafety-valve, the lever-chain, and weighted arm, connecting thesafety-valve and gascock key, as set forth.

I also claim the combination of the gos-burner and its conduit with :tnextension, q, of the conduit beyond the burner, and with a screw-cap orthirnb1e,'m, screwed upon such extension, as set forth, such being toenable atmospheric air to be supplied to the gos-conduit, ascircumstances may require, when such gas-conduit and its burner arecombined with a, boiler, as set forth.

` JAMES CHAMBERS.

Witnesses:

R. H. EDDY, Gno. H. ANDREWS.-

